Military insult used primarily in the Air Force to describe services, personnel, finance and other support staff. This term is primarily used by aviators. It is more limited than the Army equivalent "pogue", in that not all non-combat, non-flying airmen are labeled as shoe clerks.

Someone more interested in making sure the letter of the law is followed even if it runs contrary to the spirit/intent of the law

Soldier 1: I'm about to deploy to a combat zone and I couldn't get a new helmet from supply.
Soldier 2: Out of stock, huh?
Solider 1: No, they had five of them in my size but said I couldn't have them. Their new regulations state they are always "required to have five in stock at all times" in case someone needs them.
Soldier 2: What a shoeclerk!